Objective:To establish a method for the determination of puerarin and balcalin in Xiao’ er Shuangjie Zhixie granules by HPLC. Methods:An Agilent Zorbax SB-C18 column (250 mm × 4. 6 mm,5 μm) was used. The mobile phase A was 0. 1% phos-phoric acid solution and the mobile phase B was methanol with gradient elution. The detection wavelength was 265 nm,the flow rate was 1. 0 ml·min-1 ,the column temperature was 30℃ and the sample size was 20 μl. Results: The linear range of pueratin was 0. 121-1. 942 μg (r=0. 999 5)and that of balcalin was 0. 230-3. 686 μg(r=0. 999 5). The average recovery was 98. 10% and 98. 20%with RSD of 1. 34% and 1. 11%(n=6), respectively. Conclusion:The method is convenient and accurate, which can be used in the de-termination of pueraln and balcalin in Xiao’ er Shuangjie Zhixie granules.

Cardiovascular Diseases ; Humans ; Shc Signaling Adaptor Proteins ; Src Homology 2 Domain-Containing, Transforming Protein 1

Objective To analyze the value of plane QRS-T angle on prediction of malignant ventricular arrhythmia (MVA) occurred after emergency percutaneous coronary intervention (PCI) in patients with acute ST-segment elevation myocardial infarction (STEMI). Methods The clinical data of 418 patients with STEMI who underwent PCI within 12 h of symptom onset were retrospectively analyzed, and the patients were divided into plane QRS-T angle ≤ 90° group (324 cases) and plane QRS-T angle>90° group (94 cases) according to the plane QRS-T angle after PCI. The clinical data were compared between 2 groups. Results Compared with patients in plane QRS-T angle ≤ 90° group, patients in plane QRS-T angle > 90° group was older: (67.4 ± 11.8) years vs. (63.6 ± 12.0) years, QTc interval was longer: (438.60 ± 34.97) ms vs. (425.24 ± 25.49) ms, rate of left ventricular ejection fraction (LVEF) <45% was higher: 57.4% (54/94) vs. 35.8% (116/324), rate of using of beta-blockers was less: 74.5% (70/94) vs. 84.9% (275/324), but the incidences of hypertension and MVA were higher:79.8%(75/94) vs. 64.5%(209/324) and 10.6%(10/94) vs. 1.2%(4/324), and there were statistical differences (P<0.01 or<0.05). Logistic regression analysis showed that plane QRS-T angle >90° was an independent risk factor of MVA after PCI in STEMI patients (OR = 9.640, P =0.001), and using of beta-blockers was a protective factor (OR = 0.266, P = 0.028). Conclusions Plane QRS-T angle>90° is an independent risk factor of MVA after PCI in STEMI patients, while the use of beta-blockers is a protective factor. Paients with STEMI after PCI should be alert to the occurrence of MVA in the condition of plane QRS-T angle>90° and not taking beta-blockers.

OBJECTIVETo reveal the factors that affect the contents of volatile oil and beta-elemene in oil in Sarcandrae and to provide scientific basis for Sarcandrae's reasonable exploitation and quality assessment.

METHODA GC method was established and the contents of volatile oil and beta-elemene were determined in Sarcandrae from different length of time to grow, different medicament portions, different collection periods and different length of time to dry.

RESULTThe length of time to grow had no significant effect and the collection periods had effect on the volatile oil yield and content of beta-elemene. The volatile oil yield and content of beta-elemene were the highest in Sarcandrae harvested in December. The yield of volatile oil in different medicament portions descended in an order of roots, leaves and stems. The content of beta-elemene was the highest in leaves and the lowest in stems. With the increasing of the length of time to dry, the volatile oil yield and content of beta-elemene decreased calculated on an anhydrous basis.

CONCLUSIONThe established method is simple, accurate and repeatable. It can be used for the quality control of beta-elemene in Sarcandrae. The study provides a valuable basis for the quality assessment, the development and utilization of Sarcandrae.

Magnoliopsida ; chemistry ; Oils, Volatile ; chemistry ; Plant Leaves ; chemistry ; Sesquiterpenes ; chemistry

OBJECTIVETo prepare the submicron emulsion of fresh Zhongjiefeng volatile oil.

METHODThe Zhongjiefeng volatile oil submicron emulsion was obtained after passing the elementary emulsion through a high pressure homogenizer. The physical and chemical stability of the emulsion was evaluated with the stability parameter of centrifugation, appearance of emulsion and the pH. The formulation and processing factors were optimized by single factor reviewing and orthogonal experimental design.

RESULTBy controlling various processing factors and optimizing formulation, the stable submicron emulsion of Zhongjiefeng volatile oil was prepared. Its mean particle diameter was 164-169 nm with PDI 0.084-0.107 and Zeta electric potential was -40 mV.

CONCLUSIONThe formulation and preparation technique of the emulsion is reasonable.

Drug Stability ; Drugs, Chinese Herbal ; chemistry ; Emulsions ; chemistry ; Oils, Volatile ; chemistry

Objective:To investigate the clinical manifestations and related risk factors of patients with Pseudomonas aeruginosa (PAE) bloodstream infection, and to provide references for clinical diagnosis and treatment of PAE bloodstream infection after combining with bacterial resistance condition. Methods:The clinical data and biological data of all patients with PAE bloodstream infection who received treatment in the Third Affiliated Hospital of Wenzhou Medical University from January 2019 to December 2020 were analyzed retrospectively. The independent influential factors of PAE bloodstream infection were analyzed using binary logistic regression. Results:Eighty-three patients had PAE bloodstream infection. Among them, 71 patients were included in the final analysis. Among the 71 patients, 36 patients (50.70%) had carbapenem-resistant Pseudomonas aeruginosa ( CRPA). Univariate analysis showed that the history of hospitalization within 90 days ( χ2 = 3.90, P = 0.048), indwelling catheterization ( χ2 = 5.08, P = 0.024), septic shock ( χ2 = 4.00, P = 0.046), mechanical ventilation ( χ2= 12.35, P < 0.001), deep venous catheter ( χ2 = 4.08, P = 0.043), acute physiology and chronic health evaluation score II ≥ 10 points ( χ2 = 4.06, P = 0.044), and multi-drug resistance ( χ2 = 11.75, P = 0.001) were the suspicious influential factors of CRPA bloodstream infection. Multivariate logistic regression analysis showed that mechanical ventilation was an independent risk factor for CRPA bloodstream infection ( OR = 7.43, 95% CI 1.182-46.674, P = 0.032). Multi-drug resistance was an independent risk factor for CRPA bloodstream infection ( OR = 5.842, 95% CI 1.520-22.450, P = 0.010). Conclusion:Mechanical ventilation and multi-drug resistance are the independent influential factors of CRPA bloodstream infection. Invasive operations such as mechanical ventilation should be avoided in the clinic.